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Update time：
2020-11-17 23:48:25
Creation time：
2019-06-11 20:37:16
Description
Description
**\*not tested\***
Design Drawing
Design Drawing
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | sound | P2 | HDR-1X2/2.54 | 1 |
| 2 | SdCard | P3 | HDR-6X1/2.54 | 1 |
| 3 | button6*6*8 | KEY1,KEY2,KEY3 | KEY-6.0*6.0-2 | 3 |
| 4 | 10KOHM | R2 | AXIAL-0.3 | 1 |
| 5 | ATMEGA328P-PU | U1 | DIP-28_300MIL | 1 |
| 6 | m5-m7-gnd | H1 | 210S-1X4P | 1 |
| 7 | m1-m4 | H2 | 210S-1X4P | 1 |
| 8 | Push-button | SW1 | PB6MM | 1 |
| 9 | LM7805CT | U2 | TO-220(TO-220-3) | 1 |
| 10 | 22pF | C3,C4 | RAD-0.2 | 2 |
| 11 | POWER | H3 | HDR-2X1/2.54 | 1 |
| 12 | 16MHz | XTAL1 | 16MHZ_OSC [PCB] | 1 |
| 13 | 0.22uF | C1 | CAP-D4.0XF1.5 | 1 |
| 14 | 100uF | C2 | CAP-D4.0XF1.5 | 1 |
| 15 | 74HC4017D,653 | U3 | SOIC-16_150MIL | 1 |
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